1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __LINUX_PAGE_OWNER_H
3#define __LINUX_PAGE_OWNER_H
4
5#include <linux/jump_label.h>
6
7#ifdef CONFIG_PAGE_OWNER
8extern struct static_key_false page_owner_inited;
9extern struct page_ext_operations page_owner_ops;
10
11extern void __reset_page_owner(struct page *page, unsigned short order);
12extern void __set_page_owner(struct page *page,
13 unsigned short order, gfp_t gfp_mask);
14extern void __split_page_owner(struct page *page, int old_order,
15 int new_order);
16extern void __folio_copy_owner(struct folio *newfolio, struct folio *old);
17extern void __folio_set_owner_migrate_reason(struct folio *folio, int reason);
18extern void __dump_page_owner(const struct page *page);
19extern void pagetypeinfo_showmixedcount_print(struct seq_file *m,
20 pg_data_t *pgdat, struct zone *zone);
21
22static inline void reset_page_owner(struct page *page, unsigned short order)
23{
24 if (static_branch_unlikely(&page_owner_inited))
25 __reset_page_owner(page, order);
26}
27
28static inline void set_page_owner(struct page *page,
29 unsigned short order, gfp_t gfp_mask)
30{
31 if (static_branch_unlikely(&page_owner_inited))
32 __set_page_owner(page, order, gfp_mask);
33}
34
35static inline void split_page_owner(struct page *page, int old_order,
36 int new_order)
37{
38 if (static_branch_unlikely(&page_owner_inited))
39 __split_page_owner(page, old_order, new_order);
40}
41static inline void folio_copy_owner(struct folio *newfolio, struct folio *old)
42{
43 if (static_branch_unlikely(&page_owner_inited))
44 __folio_copy_owner(newfolio, old);
45}
46static inline void folio_set_owner_migrate_reason(struct folio *folio, int reason)
47{
48 if (static_branch_unlikely(&page_owner_inited))
49 __folio_set_owner_migrate_reason(folio, reason);
50}
51static inline void dump_page_owner(const struct page *page)
52{
53 if (static_branch_unlikely(&page_owner_inited))
54 __dump_page_owner(page);
55}
56#else
57static inline void reset_page_owner(struct page *page, unsigned short order)
58{
59}
60static inline void set_page_owner(struct page *page,
61 unsigned short order, gfp_t gfp_mask)
62{
63}
64static inline void split_page_owner(struct page *page, int old_order,
65 int new_order)
66{
67}
68static inline void folio_copy_owner(struct folio *newfolio, struct folio *folio)
69{
70}
71static inline void folio_set_owner_migrate_reason(struct folio *folio, int reason)
72{
73}
74static inline void dump_page_owner(const struct page *page)
75{
76}
77#endif /* CONFIG_PAGE_OWNER */
78#endif /* __LINUX_PAGE_OWNER_H */
79